Mortfontaine Alocasia (Alocasia mortfontanensis)

Mortfontaine Alocasia

Alocasia mortfontanensis

Its bold veined leaves bring tropical drama to spaces. Large-leafed evergreen foliage plant; common names: Mortfontaine Alocasia, Giant Elephant Ear.

Partial sun
1–2/week
Moderate
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Plant Needs

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Sunlight Bright indirect light; avoid direct midday sun which can scorch leaf edges; tolerates low light for short periods
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Watering Water thoroughly when the top 2–3 cm of soil feels dry; avoid overwatering to prevent root rot
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Temperature Thrives in warm, humid conditions; avoid temperatures below 15°C as it can trigger leaf yellowing and stunted growth
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Characteristics

  • Leaf: Large arrow-shaped glossy dark green leaves with prominent white veins and peltate bases
  • Flower: Pale green spathe enclosing a creamy white spadix; rarely produced in indoor settings
  • Stem: Thick, succulent petioles with faint white mottling and aerial roots for anchorage
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Care Guide

Watering

Keep soil consistently moist but not waterlogged; mist leaves 2–3 times weekly to boost humidity

Fertilization

Diluted balanced liquid fertilizer every 2 weeks. Cease fertilization in autumn and winter when growth slows

Composted banana peel tea:Soak fully composted banana peels in water for 24 hours, dilute the mixture 1:20 with water, and apply as a root drench; avoid using raw peels to prevent pest infestations
Pruning
  • Remove yellowing or damaged leaves at the base of the petiole to maintain plant health and airflow
  • Trim overgrown petioles to control the plant’s size and shape, especially in small indoor spaces
  • Repot in early spring and trim dead or rotting roots to encourage new root growth
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Toxic; ingestion may cause drooling, vomiting, oral pain, and difficulty swallowing

Humans: Contains calcium oxalate crystals; ingestion causes oral irritation and temporary swelling of lips or tongue

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Garden Uses & Culture

Culture: N/A

Usage: Ornamental foliage plant for indoor decor, tropical garden beds, or shaded outdoor planters